<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div>
    <h1>BMI测试</h1>
    <input type="text" v-model="h" placeholder="请输入身高(米)">
    <input type="text" v-model="w" placeholder="请输入体重(公斤)">
    <input type="button" value="开始测试" @click="f()">
    <h2>测试结果:{{result}}</h2>
</div>

<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
<script src="https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>
<script>
  let v = new Vue({
    el:"body>div",
    data:{
        result:"",h:"",w:""
    },
    methods:{
        f(){
            axios.get("/bmi?h="+v.h+"&w="+v.w).then(function (response){
                //弹出服务器响应的数据
                v.result = response.data;
            })
        }
    }
  })
</script>
</body>
</html>